3984186145 has 4 divisors (see below), whose sum is σ = 4781023380. Its totient is φ = 3187348912.

The previous prime is 3984186103. The next prime is 3984186163. The reversal of 3984186145 is 5416814893.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1022976256 + 2961209889 = 31984^2 + 54417^2 .

It is a cyclic number.

It is not a de Polignac number, because 3984186145 - 2²⁷ = 3849968417 is a prime.

It is a super-2 number, since 2×3984186145² = 31747478476019922050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398418610 + ... + 398418619.

It is an arithmetic number, because the mean of its divisors is an integer number (1195255845).

Almost surely, 2^3984186145 is an apocalyptic number.

It is an amenable number.

3984186145 is a deficient number, since it is larger than the sum of its proper divisors (796837235).

3984186145 is an equidigital number, since it uses as much as digits as its factorization.

3984186145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796837234.

The product of its digits is 829440, while the sum is 49.

The square root of 3984186145 is about 63120.4098925221. The cubic root of 3984186145 is about 1585.3063782942.

The spelling of 3984186145 in words is "three billion, nine hundred eighty-four million, one hundred eighty-six thousand, one hundred forty-five".